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N0. 62l,234. Patented Mar. l4, I899.- G. H. ELLIS.

TENSION PRODUCING DEVICE FOR TWINE SP'INNERS.

(Application filed Oct. 28, I897.)

(No Model.)

THE Noam: PETERS co. wow-mac" WASNINGYQN. n cy times iS rnrns PATENT Enron.

GEORGE I-I. ELLIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DEERING I-IARVESTER COMPANY, OF SAME PLACE.

TENSION-PRODUCING DEVICE FOR TWINE-SPINNERS.

'S'IPECIFIGATION forming part of Letters Patent No. 621,234, dated March 14, 1899.

Application filed October 23, 1897. Serial No. 656,161. (No modela) To all whom it may concern:

Be it known that I, GEORGE H. ELLIs, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Tension-Producing Devices for Twine-Spinners, of which the following is a full description, reference being had to the accompanying drawings.

Figure 1 is a perspective View of so much of a twine-spinner as is necessary to show the purpose and operation of my invention. Fig. 2is a side elevation of the tension-producing device. Fig. 3 is a longitudinal section of the same, and Fig. 4c is a longitudinal section of the main spindle of a twine-spinn er.

My invention consists in tension-producin g devices adapted to effect a stress upon the twine being laid as desired, preferably to keep the said stress practically uniform at all times during the formation of the cop being wound.

I have thought it a sufflcient exempliflcation of my invention to show it as adapted to ordinary twine-spinners. In these machines a flier provided with haul-pulleys is adapted to carry the twine and lay it in courses around a core or mandrel, wrapping it thereon as fast as twisted and fed by the haul-pulleys. In order that the twine may be tensely laid on the core or mandrel, the rotation of the latter is necessarily resisted in some manner. A

resistant now in common use consists of some form of friction-brake; but I find that atmospheric resistance can be made available with better results.

In the drawings, A may be considered to represent the frame of an ordinary twinespinner, and B the flier, C the haul-pulleys, and D a spool or copsecured to the sleeve D, which sleeve constitutes a core or mandrel for said cop or spool and is provided with the pulley B .The flier is provided with sleevelike journals at its ends, which journals are suitably supported in bearings, and the sleeve D extends through the hollow journal at one end of the flier. On this one of the flierjournals is the pulley B, by which the fliershaft 13. In Fig. 1 the twine is shown at d as extending from one of the bars of the flier to the periphery of the cop of twine being formed. In the present instance, as in most spinners, the cop or the mandrel is only given rotation by the twine that is being spun, the flier carrying the strand around and rotating the mandrel by pulling the latter with it, thereby giving the mandrel or cop rotation. In order to resist the rotation of the mandrel and the spool or cop D supported on it, I secure a pulley B to the sleeve D and pass therefrom a belt downward to a pulley D and adapt said pulley to, in effect, operate plungers in suitable cylinders, as will now be described. For convenience I place the pulley D upon the shaft 13. It is free to revolve independently of the shaft and independently of the pulley B to which it is adjacent. The sleeve D, on which the spool is placed or cop is formed, extending through the journal of the flier, as it does, and having the pulley B secured on it, and the belt D extending from this pulley to the pulley D may be considered simply as a means for givingmotion to the plungers of the tension-producing device. Ifpower he applied to the shaft 13, the flier will be actuated, and through the instrumentality of the twine d, extending from the flier to the mandrel or spool or cop thereon, the pneumatic resisting device will be operated.

The pneumatic resisting device is from choice located adjacent to the pulley B and is constructed as best shown in Fig. 3,where F F F are three air-cylinders, preferably formed as one piece with the pulley D. In

these cylinders are the plungers f. At the head of the cylinder preferably are the small apertures f for the ingress and egress of the air that retards the action of the plungers. The purpose of these holes will be understood if we suppose that for the moment any cylinder is filled with air. Any movement of the plunger is resisted, of course, but still it is allowed to move gradually, because of the opportunity for the air to slowly escape. If, on the other hand, one of the plungers be supposed to be so located that there is little or no air in the cylinder, the plunger cannot be withdrawn rapidly because of the partial vacuum. As the air can enter through the small aperture f however, the plunger can move slowly. In order to give the plungers the necessary reciprocating movement, a flange E, having a groove 6, is secured to the shaft B and driven at the same rate as and by said shaft. The plane of this groove is not at right angles to the axis of the shaft 13 but is inclined thereto, substantially as shown in Fig. 8. E, having three arms (2 extending radially therefrom and connected to the plungers f. The disk is held in said groove so as to be frictionally resisted by the flange E, thus permitting it to yield and allowing the flange and wheel D to rotate at differential speeds. The outer extremities of the radial arms are preferably ball-shaped, as shown, and rest in suitable sockets in the outer ends of the plungers. The angular distance between the cylinders corresponds with that between the arms 0 referred to. The walls of the cylinders F on the side nearest the shaft B are slotted, and through these slots the radial arms pass. The arms may be said to reciprocate in these slots and move the plungers. It will thus be seen that a differential resistance device is provided composed of two parts, one (the flange E) being positively driven by the main shaft, and the other (the pulley D disk E, and their connecting parts) similarly driven by the copsupporting mandrel, said two parts having a yielding connection which permits them to rotate-together at the same or different rates of speed. It will be understood that if pulley D be rotated the disk E will be carried therewith because of the fact that the radial arms lie in the slots in the cylinders above referred to. The disk E then revolves at the same rate of speed as the pulley D The result of this is that the disk E, moving within the diagonally-placed groove 6 of the flange E, isgiven, in effect, a wabbling motion, and the plungers thus actuated. This wabbling motion is due to the fact that there is a difference in the rate of speed of the flange E and the disk E, for it will be understood that unless the flange and disk revolve with respect to each other there would be no lateral movement of the disk, and consequently no wabble. It is clear, therefore, that the greater the difference between the speed of rotation of the pulley D and that of the grooved flange E the more the wabble and the greater the resistance to the rotation of the said pulley D will be because of the fact that with the aperturesf of a given size there will be greater atmospheric resistance to the movement of the plungers.

Taking into account ,now the fact that as the radius of the cop increases the twine being laid thereon can more easily rotate it, it becomes clear that the cop will be carried by it more easily, and consequently with less stress upon the twine, unless some competent In this groove is a circular disk device is employed to increase the resistance. This last being true, the twine will be wound tightly.

The size of the apertures f can be in proportion to the leakage desired in each case.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a twine-spinner, the combination of the main shaft driven at a uniform speed, the flier, adriving connection. between the shaft and flier, a cop-supporting mandrel rotated by the pull of the twine and consequently traveling at a varying speed, and a differential pneumatic resistance device composed of two parts, one of said parts being driven ata speed variable with the speed of the mandrel.

2. In a twine-spinner, the combination of the main shaft driven at a uniform speed, the flier, a driving connection between the shaft and flier, a cop-supporting mandrel rotated by the pull of the twine and consequently traveling at a varying speed, and a differential pneumatic resistance device composed of two parts, one of said parts being driven at a speed variable with that of the mandrel, and the other at a uniform speed.

3. In a twine-spinner, the combination of the main shaft, the flier, a driving connection between said shaft and flier, a cop-supporting mandrel, and a differential pneumatic resistance device connected with said mandrel, said resistance device being composed of two parts, one of which is driven by the mandrel, and the other by the main shaft.

4. In a twine-spinner, the combination of the main shaft, a pulley fixed thereon,the flier, a pulley fixedon the flier-shaft, a driving connection between said pulleys, whereby the flier is rotated by the main shaft, a cop-supporting mandrel adapted to be rotated by the pull of the twine in the flier, a pulley secured on the mandrel, and a differential pneumatic resistance device composed of two parts, one of which is connected to the main shaft'and the other to the pulley on the mandrel.

5. The combination of the shaft B the flier B, driven thereby, the mandrel D adapted to be driven by the pull of the twine, the pulley D driven by the mandrel, and a yielding connection between the shaft B and the pulley D.

6. The combination of the shaft 13 the flange E fixed thereon, the pulley D loose on the shaft, and the disk E frictionally connected to the flange E, the pneumatic cylinders F on the pulley, and the plungersf connected to the disk.

7. The combination of the shaft E the pulley D loose thereon, mechanism for revolving the pulley D on the shaft, the grooved flange E keyed on the shaft, and the disk E slidingly held in the groove of the flange and positively connected to the pulley D 8. The combination of the shaft B the pulley D loose thereon, mechanism for revolving the pulley D on the shaft, the grooved too flange E keyed on the shaft, the disk E slidthe shaft for reciprocating the piston, and ingly held in the grooveof the flange, a pneumeans for rotating the shaft and pulley at 19 matic cylinder and piston carried by the pnldifferential speeds. ley D and a connection between the iston and the disk P eEoRen H. ELLIS.

9. The combination of a shaft, apIrl-ley loose Witnesses: on said shaft, a pneumatic cylinder and pis- ARTHUR J OHNSON, ton carried by the pulley, means carried by LOUIS O. HENSLER. 

